var app = angular.module('plunker', []);
app.controller('MainCtrl', function($scope) {
$scope.name = 'World';
});
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>AngularJs Validation using ng-Messages</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootswatch/3.3.4/cerulean/bootstrap.min.css">
<script src="//code.angularjs.org/1.4.0/angular.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.4.0/angular-messages.js"></script>
<script>
var app = angular.module('app', ['ngMessages']);
app.controller('MainCtrl', ["$scope", function($scope) {
$scope.email = 'anil.singh@gmail.com';
}]);
</script>
</head>
<body class="container" ng-app="app" ng-controller="MainCtrl">
<div class="well text-center">
<h2>AngularJs Validation using ng-Messages</h2>
</div>
<form name="form">
<div class="form-group" ng-class="{'has-error': form.email.$touched && form.email.$invalid }">
Email <input type="email" name="email" class="form-control" ng-model="email" required>
<div class="help-block" ng-messages="form.email.$error" ng-if="form.email.$touched">
<div ng-messages-include="msg.html"></div>
</div>
</div>
<div class="form-group">
<button type="submit" class="btn btn-danger">Submit</button>
</div>
</form>
<pre>form.email.$error = {{ form.email.$error | json }}</pre>
<div class="well text-center">
<p><a href="http://www.code-sample.com/">By Anil Singh</a></p>
</div>
</body>
</html>
/* Put your css in here */
<p ng-message="required">This field is required</p>
<p ng-message="email">This needs to be a valid email</p>